Hi Judy,
What you have is a beautiful antique Venetian bead, decorated with sideways laid canes, then decorated on top of those with small pieces of cane. The overall effect, to my way of thinking, is a bead that is decorated with tiny beads. I have three like this one.

These are very collectible and not very common, although they seem to have cropped up more starting with Tucson of 2013.

Paul Johnson (waneeho on the forum) has a stunning strand of these showing a wide variety of variations on the basic theme. Maybe he can re-post or else I will try to find it in the archives.

NIce find!